Microstructure change in the radial direction of the cylindrical products of the Al2O3-TiC ceramics combustion-synthesized by aluminothermic reactions

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	Microstructure change in the radial direction of the cylindrical products of the Al2O3-TiC ceramics combustion-synthesized by aluminothermic reactions
	Xia, TD ; Wang, TM ; Zhao, WJ ; Liu, TZ
刊名	RARE METAL MATERIALS AND ENGINEERING
	1999-12
卷号	28 期号:6 页码:363-367
关键词	combustion synthesis ceramics microstructure Al2O3-TiC composite aluminothermic reaction
ISSN号	1002-185X
英文摘要	Effect of pellet diameter on the combustion velocity and temperature profile in the combustion synthesis of Al2O3-TiC ceramics and microstructure change in the radial direction of the cylindrical products were investigated. For a cylindrical sample the rounded particles with diameters of 1.5 mu m similar to 5.5 mu m and the melted polygons with sides about 10 mu m similar to 20 mu m are TiC particles and corundum with a little TiC in the axial region, respectively. In the region of half-radius, TiC is smaller particles with diameters of 0.1 mu m similar to 3 mu m and corundum is polygons with sides about 5 mu m similar to 15 mu m In the region near the circumference of the fractured sample and on the peripheral surface of the as-combusted sample, however, corundum becomes whiskers and TiC agglomerate actually consisting of fine particles with 0.1 mu m similar to 0.5 mu m in size. There are heat losses both in axial and radial directions of the sample during combustion synthesis. It has been found that the obvious change of temperature versus profile in the post-combustion stage leads to the microstructure change in the radial direction of the sample.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000084821900007
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/35956]
专题	兰州理工大学
通讯作者	Xia, TD
作者单位	1.Gansu Univ Technol, Lanzhou 730050, Peoples R China 2.Lanzhou Univ, Lanzhou 730000, Peoples R China 3.Beijing Univ Aeronaut & Astronaut, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Xia, TD,Wang, TM,Zhao, WJ,et al. Microstructure change in the radial direction of the cylindrical products of the Al2O3-TiC ceramics combustion-synthesized by aluminothermic reactions[J]. RARE METAL MATERIALS AND ENGINEERING,1999,28(6):363-367.
APA	Xia, TD,Wang, TM,Zhao, WJ,&Liu, TZ.(1999).Microstructure change in the radial direction of the cylindrical products of the Al2O3-TiC ceramics combustion-synthesized by aluminothermic reactions.RARE METAL MATERIALS AND ENGINEERING,28(6),363-367.
MLA	Xia, TD,et al."Microstructure change in the radial direction of the cylindrical products of the Al2O3-TiC ceramics combustion-synthesized by aluminothermic reactions".RARE METAL MATERIALS AND ENGINEERING 28.6(1999):363-367.